Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5d01cde765c65bc…

MALICIOUS

PDF

43.7 KB Created: 2020-08-27 20:21:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5db4df883146611d5deed68c62e09aab SHA-1: 5a3dc9e578559f8aafb216e1c576746b4d9ffa5e SHA-256: f5d01cde765c65bcf0a7d8cbf39c8af0e56cdaf52167f670ddf8ef1534d8cf6d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, embedding a large number of external links, many hosted on Shopify. The document body, though partially corrupted, contains the phrase 'Picture of travis stork's wife' and the malicious URL, suggesting a lure to entice clicks. The primary malicious IOC is the redirector URL, which likely leads to further malicious activity.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=picture+of+travis+stork%2527+s+wife
    • http://files.kirchner-architects.com/uploads/1/3/2/3/132303035/7223791.pdf
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/mitugukedewujuriporiko.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6918/files/34088497592.pdf
    • https://cdn.shopify.com/s/files/1/0440/4989/1478/files/96373218502.pdf
    • https://cdn.shopify.com/s/files/1/0429/4498/7292/files/discuss_verbal_and_non_verbal_communication.pdf
    • https://cdn.shopify.com/s/files/1/0436/0850/6531/files/71608612063.pdf
    • https://cdn.shopify.com/s/files/1/0436/9406/3770/files/amazing_spider_man_comic_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/75246303796.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/47242107032.pdf
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/78172094705.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/accelerometer_applications.pdf
    • https://cdn.shopify.com/s/files/1/0440/5572/4197/files/88237786544.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0411/files/96419910993.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060c3.bin
142d4a82305e8e471bdb70faeb7a14bb91091ed2eab4f1d11202b22a70b969cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C3 4868 bytes
font_01_sfnt_off0000717f.bin
5acea210f6d12c5b5184f88923046f15ab1be3c4103073f195dc7edc57a9dd5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x717F 9972 bytes
font_02_sfnt_off000093ad.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93AD 4324 bytes

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